J/ψω decay channel of the X(3872) charm meson molecule
Analyses of the J/ψπ[superscript +]π[superscript -] decay channel of the X(3872) resonance by the CDF, Belle, and LHCb Collaborations have established its J[superscript PC] quantum numbers as 1[superscript ++]. An analysis of the π[superscript +]π[superscript -]π[superscript 0] invariant mass distri...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/81374 |
| _version_ | 1826188734701240320 |
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| author | Braaten, Eric Kang, Daekyoung |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Braaten, Eric Kang, Daekyoung |
| author_sort | Braaten, Eric |
| collection | MIT |
| description | Analyses of the J/ψπ[superscript +]π[superscript -] decay channel of the X(3872) resonance by the CDF, Belle, and LHCb Collaborations have established its J[superscript PC] quantum numbers as 1[superscript ++]. An analysis of the π[superscript +]π[superscript -]π[superscript 0] invariant mass distribution in the J/ψπ[superscript +]π[superscript -]π[superscript 0] decay channel by the BABAR Collaboration indicated a preference for 2[superscript -+] over 1[superscript ++]. We point out that a proper evaluation of the χ[superscript 2] in that analysis increases the probability for 1[superscript ++] from 7.1% to about 18.7%. In the case of quantum numbers 1[superscript ++], where the X has an S-wave coupling to J/ψω, the proximity of the J/ψω threshold to D[superscript *]D̅ thresholds and the narrow width of the ω suggest that the effects of scattering between J/ψω and charm meson pairs could be significant. We derive invariant mass distributions for J/ψπ[superscript +]π[superscript -]π[superscript 0] and π[superscript +]π[superscript -]π[superscript 0] that take into account S-wave scattering between the D[superscript *0]D̅[superscript 0], D[superscript *+]D[superscript -], and J/ψω channels. We also analyze the effects of scattering through the χ[subscript c1](2P) charmonium resonance. We find that scattering effects are unable to produce significant changes in the shape of the π[superscript +]π[superscript -]π[superscript 0] invariant mass distribution. |
| first_indexed | 2024-09-23T08:03:54Z |
| format | Article |
| id | mit-1721.1/81374 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:03:54Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/813742022-09-23T10:37:18Z J/ψω decay channel of the X(3872) charm meson molecule Braaten, Eric Kang, Daekyoung Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Kang, Daekyoung Analyses of the J/ψπ[superscript +]π[superscript -] decay channel of the X(3872) resonance by the CDF, Belle, and LHCb Collaborations have established its J[superscript PC] quantum numbers as 1[superscript ++]. An analysis of the π[superscript +]π[superscript -]π[superscript 0] invariant mass distribution in the J/ψπ[superscript +]π[superscript -]π[superscript 0] decay channel by the BABAR Collaboration indicated a preference for 2[superscript -+] over 1[superscript ++]. We point out that a proper evaluation of the χ[superscript 2] in that analysis increases the probability for 1[superscript ++] from 7.1% to about 18.7%. In the case of quantum numbers 1[superscript ++], where the X has an S-wave coupling to J/ψω, the proximity of the J/ψω threshold to D[superscript *]D̅ thresholds and the narrow width of the ω suggest that the effects of scattering between J/ψω and charm meson pairs could be significant. We derive invariant mass distributions for J/ψπ[superscript +]π[superscript -]π[superscript 0] and π[superscript +]π[superscript -]π[superscript 0] that take into account S-wave scattering between the D[superscript *0]D̅[superscript 0], D[superscript *+]D[superscript -], and J/ψω channels. We also analyze the effects of scattering through the χ[subscript c1](2P) charmonium resonance. We find that scattering effects are unable to produce significant changes in the shape of the π[superscript +]π[superscript -]π[superscript 0] invariant mass distribution. United States. Dept. of Energy (Grant DE-FG02-91-ER40690) United States. Dept. of Energy (Contract DE-FG02-94ER40818) 2013-10-15T12:42:31Z 2013-10-15T12:42:31Z 2013-07 2013-05 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/81374 Braaten, Eric, and Daekyoung Kang. “J/ψω decay channel of the X(3872) charm meson molecule.” Physical Review D 88, no. 1 (July 2013). © 2013 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevD.88.014028 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society American Physical Society |
| spellingShingle | Braaten, Eric Kang, Daekyoung J/ψω decay channel of the X(3872) charm meson molecule |
| title | J/ψω decay channel of the X(3872) charm meson molecule |
| title_full | J/ψω decay channel of the X(3872) charm meson molecule |
| title_fullStr | J/ψω decay channel of the X(3872) charm meson molecule |
| title_full_unstemmed | J/ψω decay channel of the X(3872) charm meson molecule |
| title_short | J/ψω decay channel of the X(3872) charm meson molecule |
| title_sort | j ψω decay channel of the x 3872 charm meson molecule |
| url | http://hdl.handle.net/1721.1/81374 |
| work_keys_str_mv | AT braateneric jpsōdecaychannelofthex3872charmmesonmolecule AT kangdaekyoung jpsōdecaychannelofthex3872charmmesonmolecule |